Method of making flexible book-covers.



J. MoKIBBIN.

METHOD OF MAKING FLEXIBLE BOOK covnns.

APPLICATION FILED MAR. 16. 1909.

Patented May 18, 1909.

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JOHN MCKIBBIN, OF NEW YORK, N. Y.

METHOD OF MAKING- FLEXIBLE BOOK-COVEBS.

F0 all whom it may concern:

Be it known that 1, JOHN MoKmniN, a citizen of the United States,residing at New York city, Brooklyn, county of Kings, State of New 1.ork, have invented new and useful improvements in Methods of MakingFlexible Book-Covers, of which the following is a specification.

This invention relates to an improved method of making flexible bookcovers and more particularly to improved means for attaching themiddling to the facing or cover proper in a simple and accurate manner.

in the accompanying drawing: Figure 1 is a rear view of a duplexmiddling prepared according to my invention; Fig. 2 a face view of theduplex middling after being superposed on the facing or cover proper,and Fig. 3 a similar view of the cover complete.

The complete book cover is composed of a flexible facing or cover properprovided on its right and left side with a stiffening piece of cardboard or middling, while the back of the cover remains free so as toretain its flexibility. As heretofore practiced, two detached pieces ofmiddling were separately secured to the right and left side of thecover, which were centered by hand. This manual centering was adiflicult operation and required great exactness, as otherwise the topand bottom edges of the two mid dlings were apt not to register, whiletheir right and left edges were thrown out of arallelism. Thus, time wasconsumed, ski led labor required, and untrue products liable to beturned out. By my invention all these difiiculties are overcome, and atrue alinement of both middling-halves is automatically obtained.

in carrying out my invention I out from a piece of cardboard, a duplexmiddling of such a size as to cover exactly the two separate and appliedmiddling-halves of the completed cover. That is to say, the length ofthe duplex middling is equal to the length of each of the twomiddlinghalves,while the width of the duplex middling is equal to thecombined widths of the two middlinghalves, plus the width of theflexible cover- Specification of Letters Patent.

Application filed. March 16, 1909.

by it all around the duplex middling.

Patented Miay 18, 1909.

Serial No. 483,817.

have either round or square corners, is illustrated in Fig. 1. It isprovided along its center with two perforated or weakened lines 10extending from its upper to its lower edge, and so spaced that the strip11 formed between such lines is equal in width to the width of theflexible book-back, wl ile the right and left sections 12, flanking suchlines, constitute the two middling-halves proper. These two sections areprovided on their back with a paste or other adhesive, which, with loosecovers, is applied in the form of a strip 13 parallel to weakened lines10, while, with tight covers, the adhesive is spread over the entireback of each of sections 12. After the duplex middling has been preparedin the manner described, it is centered upon the facing or cover proper14 consisting of leather, leatherette, cloth or other suitable material.This cover is of such a size that a rim or flange 15 is formed Apressure on the latter will cause its two sec tions 12 to adhere to thefacing, and then the center strip 11 is ripped out, (Fig. 2), to leavethe back of the facing uncovered. l iinally, flange 15 is turned overthe outer edges of the two, now separated, sections 12 to complete thecover, (Fig. 3).

In binding the book, the front and rear Ply-leaves are asted over theinner sides of the cover, so t lat the middling will become concealed.

It will be seen that with my improved method the attachment of themiddling to the cover is greatly facilitated, and that the exactparallelism of the two middling-sections is automatically effected in asimple manner and without requiring skilled labor.

I claim:

1. Method of making a flexible book cover which consists in superposinga duplex mid dling upon a facing, and removing a central strip from saidmiddling.

2. Method of making a flexible book cover which consists in providing aduplex mid dling with a pair of parallel weakened lines to form anintervening strip, superposing said middling upon a facing, and rippingout back. This duplex middling, which may 1 said strip.

3. Method of making a flexible book cover turning the flange over theouter edges of which consists in providing a duplex midthe middling.

dljng With a pair of weakened lines to form 1 Signed by me at New Yorkcity (Manhat iv:

an intervening strip and a pair of flanking tan) N. Y., this 15th day ofMarch, 1909. sections, apglying an adhesive to said sec- JOHN MOKIBBIN.tions beyon the weakened lines, superpos- Witnesses: 7 ing the middlingupon 21, facing having a suri EDWARD S HORR, rounding flange, rippingout the strip, and 1 FRANK v. BRIESEN.

